<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>js 基础知识 演示</title>
  </head>
  <body>
    <p>一段文字 1</p>
    <p>一段文字 2</p>
    <p>一段文字 3</p>

    <script src="./promise4.js"></script>
    <!-- <script src="./async4.js"></script> -->
  </body>
</html>
